You're also getting the PAL version, which will be less desirable than the US one due it being easier to get. Also, if this game has any DLC, you'll be needing a PAL account to download it.
I think you're assuming that he cares for the value... maybe he just wants the CE for stuff like the plush and book?
And if this is as rare as it's made out to be, then there's a chance people will take a shot at the PAL. It can still be played and has most of the same contents. Plus, a lot of people don't want to risk importing stuff and DLC probably won't be a huge factor for this game. I think even import version from the UK will hold its value (especially since he's only paying $80 for it)-- not sure about the German version though.